摘要:
A diaryl carbonate is prepared at a high yield and a high selectivity by heating a diaryl oxalate in the presence of an organic phosphorous compound to release carbon monoxide therefrom. A halogen atom-containing compound can be employed in combination with the organic phosphorous compound.
摘要:
A catalyst composed of an organic phosphorus compound having a trivalent or pentavalent phosphorus atom and at least one carbon-phosphorus bonding or a combination of the organic phosphorus compound and a halogen atom-containing compound is effective for decarbonylation, that is, for releasing carbon monoxide from a compound containing a moiety of --CO--CO--O-- in its molecular structure.
摘要:
A process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation is conducted by the steps of:1) performing a decarbonylation reaction of a diaryl oxalate in the presence of an organic phosphorus compound catalyst to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst;2) recovering the diaryl carbonate from the reaction mixture; and3) performing a decarbonylation reaction of a diaryl oxalate in the presence of the reaction mixture from which the diaryl carbonate has been recovered and to which a halogen atom-containing compound is added, to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst.
摘要:
A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).
摘要:
A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).
摘要:
An improved process for preparing an organic phosphonium chloride is performed by bringing an organic phosphonium bromide into contact with a chloride ion in a heterogeneous mixture solution of water and an organic solvent.
摘要:
An improved process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation utilizes a reaction vessel composed of two or more reaction chambers which are connected in series. The process is composed of the steps of continuously introducing the diaryl oxalate and an organic phosphorus compound having a trivalent or pentavalent phosphorus atom and at least one carbon-phosphorus bonding into the first chamber and continuously recovering a reaction mixture mainly containing the diaryl carbonate from the last chamber under the condition that a mixture of the diaryl oxalate and the organic phosphorus compound is heated in the reaction chambers, while discharging carbon monoxide released from the mixture.
摘要:
To provide a health management system including health data measuring devices shared by a plurality of persons and health data measuring devices used by an individual together, which unites health data measured by each health data measuring device with the user practicing the measurement to allot user ID etc. to the health data as well as to provide a personalizing terminal and a health management data integrating method. A personalizing terminal 160 receives attribute information and health data from common devices 110 to 130 as the health data measuring devices shared by the plurality of persons, gives a user ID to the health data at a user ID allocator 163 and transmits the health data and the aforementioned attribute information to a gateway 170. Gateway apparatus 170 integrates the attribute information and health data received from personalizing terminal 160, personal device 140 or 150 and transmits the data to a server apparatus 310 in a data center 300.
摘要:
To provide a health management system including health data measuring devices shared by a plurality of persons and health data measuring devices used by an individual together, which unites health data measured by each health data measuring device with the user practicing the measurement to allot user ID etc. to the health data as well as to provide a personalizing terminal and a health management data integrating method. A personalizing terminal 160 receives attribute information and health data from common devices 110 to 130 as the health data measuring devices shared by the plurality of persons, gives a user ID to the health data at a user ID allocator 163 and transmits the health data and the aforementioned attribute information to a gateway 170. Gateway apparatus 170 integrates the attribute information and health data received from personalizing terminal 160, personal device 140 or 150 and transmits the data to a server apparatus 310 in a data center 300.
摘要:
An information processing apparatus includes: an input device for receiving input information; a display device for displaying information on a display screen; and a database for storing words and information related to the words to allow information related to a related word related to an input word be retrieved. The apparatus further includes: a display region setting section for setting a size of a related word information display region for displaying the information related to the related word on the display screen depending on an input via the input device; a relation level range setting section for setting a range of a relation level between the word and a related word related to the word; a display controller for displaying the related word information display region of which size has been set on the display screen; and a display information determining section for determining a type of a related word to be displayed on the related word information display region and an information amount of the related word.